Spark-arrester



(No Iodel.)

H. MOKENZIE. y Spark Arrester.

No. 241,875. Patented May 24,1881.

n. msn; Mmm. www, nA a UNITED STATES PATENT OFFICEe HUGH MCKENZIE, 0EcAEo, MIcHIGAN.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 241,875, dated May 24,1881.

Application filed March 23,1881. (No model.)

' Caro, in the county of Tuscola and State ot' Michigan, have inventedan Improved Spark- Arrester, of which the fcllowingis a specification.

The nature of my invention relates to certain new and usefulimprovements in the construction ot' devices att-ach ed toa smoke-stack,

for the prevention of the passage of sparks out of said stack at itstop.

The invention consists in the novel and peculiar construction of theparts, and their combinations with each other and with a smokestack,whereby sparks are arrested and extinl guished 1n the stack, anddischarged therefrom by a tlow oi water, as more fully hereinafterdescribed.

Figure l is a vertical central section. Fig. 2 is a plan with the capotthe stack removed. Fig. 3 is a cross-section on the line 3 3 in Fig. 1.

In the accompanying drawings, which form a part ot' this specification,A represents a section of a smoke-stack ot a portable engine, surmountedby a cap or hood, B, whereby an enlarged chamberis formed around thedischarge end of the stack, the latter terminating in a double andinclosed deiiector, C, the only outlets from which are the openings a,whereby the products ot' combustion are arrested and thrown verticallydownward into thehood. The shape of this double detlector is shown inFig. 1, and its sides are inclosed, and it has a central opening in thebottom, coincidentl and engaged with the top of the stack.

D is a water-pipe, .with one end projecting through the wall of thehood, and, when in use, designed to be connected with any suitablesource ot' supply, while that portion of the pipe within the hoodextends spirally downward along its inner side, as shown.

E is an exit-pipe leading out of the hood near its conjunction with thestack.

F is a smoke-discharge pipe through the top of the hood, with 'its lowerend projecting downward within the hood.

In practice the products of combustion pass from the top of the stackinto the double de'- flector, and the cinders and sparks are arrestedand thrown down through the openings (tinto the hood, while the smokeitself will, after leaving the detlector, pass upward to the. exit. Asthe sparks fall they are thrown into the water from the pipe D, andcarried with such water out of the hood, through the exit-pipe E.

What I claim as my invention is- 1. 1n combination with the smoke-stackA and the hood B, tightly fitting the stack A at its lower end, theinclosed double deector C, provided with two separate curved passages,a, c, and having straight flat sides, substantially as and for thepurpose speci'ed.

2. In combination with the stack A, hood B, and inclosed detiector G,having separate passages a a, the curved inclined inlet-pipe D, adaptedto cause the water to flow around the smoke-stack, and the outlet E,substantially as described.

HUGH MCKENZIE.

Witnesses:

H. S..SPRAGUE,

E. W. ANDREWS.

